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1 ;;; -*-Emacs-Lisp-*-
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2 ;;;%Header
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3 ;;;
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4 ;;; Rcs_Info: completer.el,v 3.23 1993/09/03 02:05:07 ivan Rel $
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5 ;;;
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6 ;;; Partial completion mechanism for GNU Emacs. Version 3.03
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7 ;;; Copyright (C) 1990, 1991, 1992 Chris McConnell, ccm@cs.cmu.edu.
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8 ;;; Thanks to Bjorn Victor for suggestions, testing, and patches for
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9 ;;; file completion.
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10
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11 ;;; This file is part of GNU Emacs.
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12
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13 ;;; GNU Emacs is distributed in the hope that it will be useful,
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14 ;;; but WITHOUT ANY WARRANTY. No author or distributor
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15 ;;; accepts responsibility to anyone for the consequences of using it
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16 ;;; or for whether it serves any particular purpose or works at all,
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17 ;;; unless he says so in writing. Refer to the GNU Emacs General Public
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18 ;;; License for full details.
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19 ;;; Everyone is granted permission to copy, modify and redistribute
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20 ;;; GNU Emacs, but only under the conditions described in the
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21 ;;; GNU Emacs General Public License. A copy of this license is
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22 ;;; supposed to have been given to you along with GNU Emacs so you
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23 ;;; can know your rights and responsibilities. It should be in a
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24 ;;; file named COPYING. Among other things, the copyright notice
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25 ;;; and this notice must be preserved on all copies.
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26
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27 ;;; When loaded, this file extends the standard completion mechanisms
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28 ;;; so that they perform pattern matching completions. There is also
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29 ;;; an interface that allows it to be used by other programs. The
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30 ;;; completion rules are:
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31 ;;;
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32 ;;; 1) If what has been typed matches any possibility, do normal
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33 ;;; completion.
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34 ;;;
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35 ;;; 2) Otherwise, generate a regular expression such that
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36 ;;; completer-words delimit words and generate all possible matches.
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37 ;;; The variable completer-any-delimiter can be set to a character
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38 ;;; that matches any delimiter. If it were " ", then "by d" would be
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39 ;;; byte-recompile-directory. If completer-use-words is T, a match is
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40 ;;; unique if it is the only one with the same number of words. If
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41 ;;; completer-use-words is NIL, a match is unique if it is the only
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42 ;;; possibility. If you ask the completer to use its best guess, it
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43 ;;; will be the shortest match of the possibilities unless
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44 ;;; completer-exact is T.
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45 ;;;
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46 ;;; 3) For filenames, if completer-complete-filenames is T, each
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47 ;;; pathname component will be individually completed, otherwise only
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48 ;;; the final component will be completed. If you are using a
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49 ;;; distributed file system like afs, you may want to set up a
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50 ;;; symbolic link in your home directory or add pathname components to
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51 ;;; completer-file-skip so that the pathname components that go across
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52 ;;; machines do not get expanded.
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53 ;;;
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54 ;;; SPACE, TAB, LFD, RET, and ? do normal completion if possible
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55 ;;; otherwise they do partial completion. In addition, C-DEL will
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56 ;;; undo the last partial expansion or contraction. M-RET will always
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57 ;;; complete to the current match before returning. This is useful
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58 ;;; when any string is possible, but you want to complete to a string
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59 ;;; as when calling find-file. The bindings can be changed by using
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60 ;;; completer-load-hook.
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61 ;;;
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62 ;;; Modes that use comint-dynamic-complete (like cmushell and ilisp)
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63 ;;; will also do partial completion as will M-tab in Emacs LISP.
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64 ;;;
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65 ;;; Examples:
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66 ;;; a-f auto-fill-mode
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67 ;;; b--d *beginning-of-defun or byte-recompile-directory
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68 ;;; by d *byte-recompile-directory if completer-any-delimiter is " "
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69 ;;; ~/i.e *~/ilisp.el or ~/il-el.el or ~/ilisp.elc
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70 ;;; /u/mi/ /usr/misc/
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71 ;;;
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72
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73 ;;;%Globals
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74 ;;;%%Switches
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75 (defvar completer-load-hook nil
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76 "Hook called when minibuffer partial completion is loaded.")
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77
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78 (defvar completer-disable nil
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79 "*If T, turn off partial completion. Use the command
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80 \\[completer-toggle] to set this.")
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81
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82 (defvar completer-complete-filenames t
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83 "*If T, then each component of a filename will be completed,
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84 otherwise just the final component will be completed.")
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85
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86 (defvar completer-use-words nil ; jwz: this is HATEFUL!
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87 "*If T, then prefer completions with the same number of words as the
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88 pattern.")
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89
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90 (defvar completer-words "---. <"
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91 "*Delimiters used in partial completions. It should be a set of
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92 characters suitable for inclusion in a [] regular expression.")
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93
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94 (defvar completer-any-delimiter nil
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95 "*If a character, then a delimiter in the pattern that matches the
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96 character will match any delimiter in completer-words.")
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97
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98 (defvar completer-file-skip "^cs/$\\|@sys\\|.edu/$\\|.gov/$\\|.com/$\\|:/$"
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99 "*Regular expression for pathname components to not complete.")
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100
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101 (defvar completer-exact nil
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102 "*If T, then you must have an exact match. Otherwise, the shortest
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103 string that matches the pattern will be used.")
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104
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105 (defvar completer-cache-size 100
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106 "*Size of cache to use for partially completed pathnames.")
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107
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108 (defvar completer-use-cache t
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109 "*Set to nil to disable the partially completed pathname cache.")
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110
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111 ;;;%%Internal
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112 (defvar completer-last-pattern ""
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113 "The last pattern expanded.")
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114
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115 (defvar completer-message nil
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116 "T if temporary message was just displayed.")
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117
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118 (defvar completer-path-cache nil
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119 "Cache of (path . choices) for completer.")
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120
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121 (defvar completer-string nil "Last completer string.")
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122 (defvar completer-table nil "Last completer table.")
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123 (defvar completer-pred nil "Last completer pred.")
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124 (defvar completer-mode nil "Last completer mode.")
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125 (defvar completer-result nil "Last completer result.")
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126
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127 ;;;%Utilities
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128 (defun completer-message (message &optional point)
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129 "Display MESSAGE at optional POINT for two seconds."
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130 (setq point (or point (point-max))
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131 completer-message t)
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132 (let ((end
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133 (save-excursion
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134 (goto-char point)
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135 (insert message)
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136 (point)))
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137 (inhibit-quit t))
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138 (sit-for 2)
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139 (delete-region point end)
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140 (if (and quit-flag
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141 ;;(not (eq 'lucid-19 ilisp-emacs-version-id))
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142 (not (string-match "Lucid" emacs-version))
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143 )
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144 (setq quit-flag nil
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145 unread-command-char 7))))
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146
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147 ;;;
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148 (defun completer-deleter (regexp choices &optional keep)
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149 "Destructively remove strings that match REGEXP in CHOICES and
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150 return the modified list. If optional KEEP, then keep entries that
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151 match regexp."
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152 (let* ((choiceb choices)
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153 choicep)
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154 (if keep
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155 (progn
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156 (while (and choiceb (not (string-match regexp (car choiceb))))
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157 (setq choiceb (cdr choiceb)))
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158 (setq choicep choiceb)
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159 (while (cdr choicep)
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160 (if (string-match regexp (car (cdr choicep)))
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161 (setq choicep (cdr choicep))
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162 (rplacd choicep (cdr (cdr choicep))))))
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163 (while (and choiceb (string-match regexp (car choiceb)))
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164 (setq choiceb (cdr choiceb)))
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165 (setq choicep choiceb)
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166 (while (cdr choicep)
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167 (if (string-match regexp (car (cdr choicep)))
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168 (rplacd choicep (cdr (cdr choicep)))
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169 (setq choicep (cdr choicep)))))
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170 choiceb))
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171
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172 ;;;%%Regexp
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173 (defun completer-regexp (string delimiters any)
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174 "Convert STRING into a regexp with words delimited by characters in
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175 DELIMITERS. Any delimiter in STRING that is the same as ANY will
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176 match any delimiter."
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177 (let* ((delimiter-reg (concat "[" delimiters "]"))
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178 (limit (length string))
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179 (pos 0)
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180 (regexp "^"))
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181 (while (and (< pos limit) (string-match delimiter-reg string pos))
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182 (let* ((begin (match-beginning 0))
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183 (end (match-end 0))
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184 (delimiter (substring string begin end))
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185 (anyp (eq (elt string begin) any)))
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186 (setq regexp
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187 (format "%s%s[^%s]*%s"
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188 regexp
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189 (regexp-quote (substring string pos begin))
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190 (if anyp delimiters delimiter)
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191 (if anyp delimiter-reg delimiter))
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192 pos end)))
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193 (if (<= pos limit)
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194 (setq regexp (concat regexp
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195 (regexp-quote (substring string pos limit)))))))
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196
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197 ;;;
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198 (defun completer-words (regexp string &optional limit)
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199 "Return the number of words matching REGEXP in STRING up to LIMIT."
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200 (setq limit (or limit 1000))
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201 (let ((count 1)
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202 (pos 0))
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203 (while (and (string-match regexp string pos) (<= count limit))
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204 (setq count (1+ count)
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205 pos (match-end 0)))
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206 count))
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207
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208 ;;;%Matcher
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209 (defun completer-matches (string choices delimiters any)
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210 "Return STRING's matches in CHOICES using DELIMITERS and wildcard
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211 ANY to segment the strings."
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212 (let* ((regexp (concat "[" delimiters "]"))
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213 (from nil)
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214 (to 0)
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215 (pattern nil)
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216 (len (length string))
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217 (matches nil)
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218 sub sublen choice word wordlen pat)
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219 ;; Segment pattern
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220 (while (< (or from 0) len)
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221 (setq to (or (string-match regexp string (if from (1+ from))) len))
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222 (if (eq (elt string (or from 0)) completer-any-delimiter)
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223 (setq sub (substring string (if from (1+ from) 0) to)
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224 sublen (- (length sub)))
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225 (setq sub (substring string (or from 0) to)
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226 sublen (length sub)))
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227 (setq pattern (cons (cons sub sublen) pattern)
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228 from to))
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229 (setq pattern (reverse pattern))
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230 ;; Find choices that match patterns
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231 (setq regexp (concat "[" delimiters "]"))
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232 (while choices
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233 (setq choice (car choices)
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234 word pattern
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235 from 0)
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236 (while (and word from
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237 (let* (begin end)
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238 (if (< (setq wordlen (cdr (setq pat (car word)))) 0)
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239 (setq begin (1+ from)
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240 end (+ begin (- wordlen)))
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241 (setq begin from
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242 end (+ begin wordlen)))
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243 (and (<= end (length choice))
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244 (or (zerop wordlen)
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245 (string-equal
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246 (car pat)
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247 (substring choice begin end))))))
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248 (setq from (string-match regexp choice
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249 (if (and (zerop from) (zerop wordlen))
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250 from
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251 (1+ from)))
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252 word (cdr word)))
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253 (if (not word) (setq matches (cons choice matches)))
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254 (setq choices (cdr choices)))
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255 matches))
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256
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257 ;;;
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258 (defun completer-choice (string choices delimiters use-words)
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259 "Return the best match of STRING in CHOICES with DELIMITERS between
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260 words and T if it is unique. A match is unique if it is the only
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261 possibility or when USE-WORDS the only possibility with the same
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262 number of words. The shortest string of multiple possibilities will be
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263 the best match."
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264 (or (if (null (cdr choices)) (cons (car choices) t))
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265 (let* ((regexp (concat "[^" delimiters "]*[" delimiters "]"))
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266 (words (if use-words (completer-words regexp string)))
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267 (choice choices)
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268 (unique-p nil)
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269 (match nil)
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270 (match-count nil)
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271 (match-len 1000))
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272 (while choice
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273 (let* ((current (car choice))
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274 (length (length current)))
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275 (if match-count
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276 (if (= (completer-words regexp current words) words)
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277 (progn
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278 (setq unique-p nil)
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279 (if (< length match-len)
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280 (setq match current
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281 match-len length))))
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282 (if (and use-words
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283 (= (completer-words regexp current words) words))
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284 (setq match current
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285 match-len length
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286 match-count t
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287 unique-p t)
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288 (if (< length match-len)
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289 (setq match current
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290 match-len length)))))
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291 (setq choice (cdr choice)))
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292 (cons match unique-p))))
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293
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294 ;;;%Completer
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295 ;;;%%Utilities
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296 (defun completer-region (delimiters)
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297 "Return the completion region bounded by characters in DELIMITERS
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298 for the current buffer assuming that point is in it."
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299 (cons (save-excursion (skip-chars-backward delimiters) (point))
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300 (save-excursion (skip-chars-forward delimiters) (point))))
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301
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302 ;;;
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303 (defun completer-last-component (string)
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304 "Return the start of the last filename component in STRING."
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305 (let ((last (1- (length string)) )
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306 (match 0)
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307 (end 0))
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308 (while (and (setq match (string-match "/" string end)) (< match last))
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309 (setq end (1+ match)))
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310 end))
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311
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312 ;;;
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313 (defun completer-match-record (string matches delimiters any dir mode)
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314 "Return (match lcs choices unique) for STRING in MATCHES with
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315 DELIMITERS or ANY wildcards and DIR if a filename when in MODE."
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316 (let ((pattern (if dir
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317 (substring string (completer-last-component string))
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318 string)))
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319 (setq matches (completer-matches pattern matches delimiters any))
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320 (if (cdr matches)
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321 (let ((match
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322 (if (not completer-exact)
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323 (completer-choice
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324 pattern matches delimiters completer-use-words)))
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325 (lcs (concat dir (try-completion "" (mapcar 'list matches)))))
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326 (list (if match (concat dir (car match)))
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327 lcs
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328 matches (cdr match)))
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329 (if matches
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330 (let ((match (concat dir (car matches))))
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331 (list match match matches t))
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332 (list nil nil nil nil)))))
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333
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334 ;;;%%Complete file
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335 (defun completer-extension-regexp (extensions)
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336 "Return a regexp that matches any of EXTENSIONS."
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337 (let ((regexp "\\("))
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338 (while extensions
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339 (setq regexp (concat regexp (car extensions)
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340 (if (cdr extensions) "\\|"))
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341 extensions (cdr extensions)))
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342 (concat regexp "\\)$")))
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343
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344 ;;;
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345 (defun completer-flush ()
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346 "Flush completer's pathname cache."
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347 (interactive)
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348 (setq completer-path-cache nil))
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349
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350 ;;;
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351 (defun completer-cache (path pred words any mode)
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352 "Check to see if PATH is in path cache with PRED, WORDS, ANY and
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353 MODE."
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354 (let* ((last nil)
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355 (ptr completer-path-cache)
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356 (size 0)
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357 (result nil))
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358 (if completer-use-cache
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359 (while ptr
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360 (let ((current (car (car ptr))))
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361 (if (string-equal current path)
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362 (progn
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363 (if last
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364 (progn
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365 (rplacd last (cdr ptr))
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366 (rplacd ptr completer-path-cache)
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367 (setq completer-path-cache ptr)))
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368 (setq result (cdr (car ptr))
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369 ptr nil))
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370 (if (cdr ptr) (setq last ptr))
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371 (setq size (1+ size)
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372 ptr (cdr ptr))))))
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373 (or result
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374 (let* ((choices
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375 (completer path 'read-file-name-internal pred words any
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376 mode t)))
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377 (if (and (or (car (cdr (cdr (cdr choices))))
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378 (string= path (car choices)))
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379 (eq (elt (car choices) (1- (length (car choices)))) ?/))
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380 (progn
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381 (if (>= size completer-cache-size) (rplacd last nil))
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382 (setq completer-path-cache
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|
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383 (cons (cons path choices) completer-path-cache))))
|
|
|
384 choices))))
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385
|
|
|
386 ;;;
|
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|
387 (defun completer-file (string pred words any mode)
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|
388 "Return (match common-substring matches unique-p) for STRING using
|
|
|
389 read-file-name-internal for choices that pass PRED using WORDS to
|
|
|
390 delimit words. Optional ANY is a delimiter that matches any of the
|
|
|
391 delimiters in WORD. If optional MODE is nil or 'help then possible
|
|
|
392 matches will always be returned."
|
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|
393 (let* ((case-fold-search completion-ignore-case)
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|
|
394 (last (and (eq mode 'exit-ok) (completer-last-component string)))
|
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|
395 (position
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|
396 ;; Special hack for CMU RFS filenames
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397 (if (string-match "^/\\.\\./[^/]*/" string)
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|
|
398 (match-end 0)
|
|
|
399 (string-match "[^~/]" string)))
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|
|
400 (new (substring string 0 position))
|
|
|
401 (user (if (string= new "~")
|
|
|
402 (setq new (file-name-directory (expand-file-name new)))))
|
|
|
403 (words (concat words "/"))
|
|
|
404 (len (length string))
|
|
|
405 (choices nil)
|
|
|
406 end
|
|
|
407 (old-choices (list nil nil nil nil)))
|
|
|
408 (while position
|
|
|
409 (let* ((begin (string-match "/" string position))
|
|
|
410 (exact-p nil))
|
|
|
411 (setq end (if begin (match-end 0))
|
|
|
412 choices
|
|
|
413 ;; Ends with a /, so check files in directory
|
|
|
414 (if (and (memq mode '(nil help)) (= position len))
|
|
|
415 (completer-match-record
|
|
|
416 ""
|
|
|
417 ;; This assumes that .. and . come at the end
|
|
|
418 (let* ((choices
|
|
|
419 (all-completions new 'read-file-name-internal))
|
|
|
420 (choicep choices))
|
|
|
421 (if (string= (car choicep) "../")
|
|
|
422 (cdr (cdr choicep))
|
|
|
423 (while (cdr choicep)
|
|
|
424 (if (string= (car (cdr choicep)) "../")
|
|
|
425 (rplacd choicep nil))
|
|
|
426 (setq choicep (cdr choicep)))
|
|
|
427 choices))
|
|
|
428 words any new mode)
|
|
|
429 (if (eq position last)
|
|
|
430 (let ((new (concat new (substring string position))))
|
|
|
431 (list new new nil t))
|
|
|
432 (let ((component (substring string position end)))
|
|
|
433 (if (and end
|
|
|
434 (string-match completer-file-skip component))
|
|
|
435 ;; Assume component is complete
|
|
|
436 (list (concat new component)
|
|
|
437 (concat new component)
|
|
|
438 nil t)
|
|
|
439 (completer-cache
|
|
|
440 (concat new component)
|
|
|
441 pred words any mode))))))
|
|
|
442 ;; Keep going if unique or we match exactly
|
|
|
443 (if (or (car (cdr (cdr (cdr choices))))
|
|
|
444 (setq exact-p
|
|
|
445 (string= (concat new (substring string position end))
|
|
|
446 (car choices))))
|
|
|
447 (setq old-choices
|
|
|
448 (let* ((lcs (car (cdr choices)))
|
|
|
449 (matches (car (cdr (cdr choices))))
|
|
|
450 (slash (and lcs (string-match "/$" lcs))))
|
|
|
451 (list nil
|
|
|
452 (if slash (substring lcs 0 slash) lcs)
|
|
|
453 (if (and (cdr matches)
|
|
|
454 (or (eq mode 'help) (not exact-p)))
|
|
|
455 matches)
|
|
|
456 nil))
|
|
|
457 new (car choices)
|
|
|
458 position end)
|
|
|
459 ;; Its ok to not match user names because they may be in
|
|
|
460 ;; different root directories
|
|
|
461 (if (and (= position 1) (= (elt string 0) ?~))
|
|
|
462 (setq new (substring string 0 end)
|
|
|
463 choices (list new new (list new) t)
|
|
|
464 user nil
|
|
|
465 position end)
|
|
|
466 (setq position nil)))))
|
|
|
467 (if (not (car choices))
|
|
|
468 (setq choices old-choices))
|
|
|
469 (if (and (car choices)
|
|
|
470 (not (eq mode 'help))
|
|
|
471 (not (car (cdr (cdr (cdr choices))))))
|
|
|
472 ;; Try removing completion ignored extensions
|
|
|
473 (let* ((extensions
|
|
|
474 (completer-extension-regexp completion-ignored-extensions))
|
|
|
475 (choiceb (car (cdr (cdr choices))))
|
|
|
476 (choicep choiceb)
|
|
|
477 (isext nil)
|
|
|
478 (noext nil))
|
|
|
479 (while choicep
|
|
|
480 (if (string-match extensions (car choicep))
|
|
|
481 (setq isext t)
|
|
|
482 (setq noext t))
|
|
|
483 (if (and isext noext)
|
|
|
484 ;; There are matches besides extensions
|
|
|
485 (setq choiceb (completer-deleter extensions choiceb)
|
|
|
486 choicep nil)
|
|
|
487 (setq choicep (cdr choicep))))
|
|
|
488 (if (and isext noext)
|
|
|
489 (setq choices
|
|
|
490 (completer-match-record
|
|
|
491 (if end (substring string end) "")
|
|
|
492 choiceb words any
|
|
|
493 (file-name-directory (car (cdr choices)))
|
|
|
494 mode)))))
|
|
|
495 (if user
|
|
|
496 (let ((match (car choices))
|
|
|
497 (lcs (car (cdr choices)))
|
|
|
498 (len (length user)))
|
|
|
499 (setq choices
|
|
|
500 (cons (if match (concat "~" (substring match len)))
|
|
|
501 (cons (if lcs (concat "~" (substring lcs len)))
|
|
|
502 (cdr (cdr choices)))))))
|
|
|
503 choices))
|
|
|
504
|
|
|
505 ;;;%Exported program interface
|
|
|
506 ;;;%%Completer
|
|
|
507 (defun completer (string table pred words
|
|
|
508 &optional any mode file-p)
|
|
|
509 "Return (match common-substring matches unique-p) for STRING in
|
|
|
510 TABLE for choices that pass PRED using WORDS to delimit words. If the
|
|
|
511 flag completer-complete-filenames is T and the table is
|
|
|
512 read-file-name-internal, then filename components will be individually
|
|
|
513 expanded. Optional ANY is a delimiter that can match any delimiter in
|
|
|
514 WORDS. Optional MODE is nil for complete, 'help for help and 'exit
|
|
|
515 for exit."
|
|
|
516 (if (and (stringp completer-string)
|
|
|
517 (string= string completer-string)
|
|
|
518 (eq table completer-table)
|
|
|
519 (eq pred completer-pred)
|
|
|
520 (not file-p)
|
|
|
521 (or (eq mode completer-mode)
|
|
|
522 (not (memq table '(read-file-name-internal
|
|
|
523 read-directory-name-internal)))))
|
|
|
524 completer-result
|
|
|
525 (setq
|
|
|
526 completer-string ""
|
|
|
527 completer-table table
|
|
|
528 completer-pred pred
|
|
|
529 completer-mode mode
|
|
|
530 completer-result
|
|
|
531 (if (and completer-complete-filenames
|
|
|
532 (not file-p) (eq table 'read-file-name-internal))
|
|
|
533 (completer-file string pred words any mode)
|
|
|
534 (let* ((file-p (or file-p (eq table 'read-file-name-internal)))
|
|
|
535 (case-fold-search completion-ignore-case)
|
|
|
536 (pattern (concat "[" words "]"))
|
|
|
537 (component (if file-p (completer-last-component string)))
|
|
|
538 (dir (if component (substring string 0 component)))
|
|
|
539 (string (if dir (substring string component) string))
|
|
|
540 (has-words (or (string-match pattern string)
|
|
|
541 (length string))))
|
|
|
542 (if (and file-p (string-match "^\\$" string))
|
|
|
543 ;; Handle environment variables
|
|
|
544 (let ((match
|
|
|
545 (getenv (substring string 1
|
|
|
546 (string-match "/" string)))))
|
|
|
547 (if match (setq match (concat match "/")))
|
|
|
548 (list match match (list match) match))
|
|
|
549 (let* ((choices
|
|
|
550 (all-completions
|
|
|
551 (concat dir (substring string 0 has-words))
|
|
|
552 table pred))
|
|
|
553 (regexp (completer-regexp string words any)))
|
|
|
554 (if choices
|
|
|
555 (completer-match-record
|
|
|
556 string
|
|
|
557 (completer-deleter regexp choices t)
|
|
|
558 words any dir mode)
|
|
|
559 (list nil nil nil nil))))))
|
|
|
560 completer-string string)
|
|
|
561 completer-result))
|
|
|
562
|
|
|
563 ;;;%%Display choices
|
|
|
564 (defun completer-display-choices (choices &optional match message end
|
|
|
565 display)
|
|
|
566 "Display the list of possible CHOICES with optional MATCH, MESSAGE,
|
|
|
567 END and DISPLAY. If MATCH is non-nil, it will be flagged as the best
|
|
|
568 guess. If there are no choices, display MESSAGE. END is where to put
|
|
|
569 temporary messages. If DISPLAY is present then it will be called on
|
|
|
570 each possible completion and should return a string."
|
|
|
571 (if choices
|
|
|
572 (with-output-to-temp-buffer " *Completions*"
|
|
|
573 (if (cdr choices)
|
|
|
574 (display-completion-list
|
|
|
575 (sort
|
|
|
576 (if display
|
|
|
577 (let ((old choices)
|
|
|
578 (new nil))
|
|
|
579 (while old
|
|
|
580 (setq new (cons (funcall display (car old)) new)
|
|
|
581 old (cdr old)))
|
|
|
582 new)
|
|
|
583 (copy-sequence choices))
|
|
|
584 (function (lambda (x y)
|
|
|
585 (string-lessp (or (car-safe x) x)
|
|
|
586 (or (car-safe y) y)))))))
|
|
|
587 (if match
|
|
|
588 (save-excursion
|
|
|
589 (set-buffer " *Completions*")
|
|
|
590 (goto-char (point-min))
|
|
|
591 (insert "Guess = " match (if (cdr choices) ", " "")))))
|
|
|
592 (beep)
|
|
|
593 (completer-message (or message " (No completions)") end)))
|
|
|
594
|
|
|
595 ;;;%%Goto
|
|
|
596 (defun completer-goto (match lcs choices unique delimiters words
|
|
|
597 &optional mode display)
|
|
|
598 "MATCH is the best match, LCS is the longest common substring of all
|
|
|
599 of the matches. CHOICES is a list of the possibilities, UNIQUE
|
|
|
600 indicates if MATCH is unique. DELIMITERS are possible bounding
|
|
|
601 characters for the completion region. WORDS are the characters that
|
|
|
602 delimit the words for partial matches. Replace the region bounded by
|
|
|
603 delimiters with the match if unique and the lcs otherwise unless
|
|
|
604 optional MODE is 'help. Then go to the part of the string that
|
|
|
605 disambiguates choices using WORDS to separate words and display the
|
|
|
606 possibilities if the string was not extended. If optional DISPLAY is
|
|
|
607 present then it will be called on each possible completion and should
|
|
|
608 return a string."
|
|
|
609 (setq completer-message nil)
|
|
|
610 (let* ((region (completer-region delimiters))
|
|
|
611 (start (car region))
|
|
|
612 (end (cdr region))
|
|
|
613 (string (buffer-substring start end))
|
|
|
614 (file-p (string-match "[^ ]*\\(~\\|/\\|$\\)" string))
|
|
|
615 (no-insert (eq mode 'help))
|
|
|
616 (message t)
|
|
|
617 (new (not (string= (buffer-substring start (point)) lcs))))
|
|
|
618 (if unique
|
|
|
619 (if no-insert
|
|
|
620 (progn
|
|
|
621 (goto-char end)
|
|
|
622 (completer-display-choices choices match nil end display))
|
|
|
623 (if (string= string match)
|
|
|
624 (if (not file-p)
|
|
|
625 (progn (goto-char end)
|
|
|
626 (completer-message " (Sole completion)" end)))
|
|
|
627 (completer-insert match delimiters)))
|
|
|
628 ;;Not unique
|
|
|
629 (if lcs
|
|
|
630 (let* ((regexp
|
|
|
631 (concat "[" words (if file-p "/") "]"))
|
|
|
632 (words (completer-words regexp lcs))
|
|
|
633 point)
|
|
|
634 ;; Go to where its ambiguous
|
|
|
635 (goto-char start)
|
|
|
636 (if (not no-insert)
|
|
|
637 (progn
|
|
|
638 (insert lcs)
|
|
|
639 (setq completer-last-pattern
|
|
|
640 (list string delimiters (current-buffer) start)
|
|
|
641 start (point)
|
|
|
642 end (+ end (length lcs)))))
|
|
|
643 ;; Skip to the first delimiter in the original string
|
|
|
644 ;; beyond the ambiguous point and keep from there on
|
|
|
645 (if (re-search-forward regexp end 'move words)
|
|
|
646 (progn
|
|
|
647 (if (and (not no-insert) match)
|
|
|
648 (let ((delimiter
|
|
|
649 (progn
|
|
|
650 (string-match lcs match)
|
|
|
651 (substring match (match-end 0)
|
|
|
652 (1+ (match-end 0))))))
|
|
|
653 (if (string-match regexp delimiter)
|
|
|
654 (insert delimiter))))
|
|
|
655 (forward-char -1)))
|
|
|
656 (if (not no-insert)
|
|
|
657 (progn
|
|
|
658 (setq end (- end (- (point) start)))
|
|
|
659 (delete-region start (point))))))
|
|
|
660 (if choices
|
|
|
661 (if (or no-insert (not new))
|
|
|
662 (completer-display-choices choices match nil end display))
|
|
|
663 (if file-p
|
|
|
664 (progn
|
|
|
665 (if (not (= (point) end)) (forward-char 1))
|
|
|
666 (if (not (save-excursion (re-search-forward "/" end t)))
|
|
|
667 (goto-char end))))
|
|
|
668 (if message
|
|
|
669 (progn
|
|
|
670 (beep)
|
|
|
671 (completer-message (if no-insert
|
|
|
672 " (No completions)"
|
|
|
673 " (No match)")
|
|
|
674 end)))))))
|
|
|
675
|
|
|
676 ;;;%Exported buffer interface
|
|
|
677 ;;;%%Complete and go
|
|
|
678 (defun completer-complete-goto (delimiters words table pred
|
|
|
679 &optional no-insert display)
|
|
|
680 "Complete the string bound by DELIMITERS using WORDS to bound words
|
|
|
681 for partial matches in TABLE with PRED and then insert the longest
|
|
|
682 common substring unless optional NO-INSERT and go to the point of
|
|
|
683 ambiguity. If optional DISPLAY, it will be called on each match when
|
|
|
684 possible completions are shown and should return a string."
|
|
|
685 (let* ((region (completer-region delimiters)))
|
|
|
686 (apply 'completer-goto
|
|
|
687 (append (completer (buffer-substring (car region) (cdr region))
|
|
|
688 table pred words completer-any-delimiter
|
|
|
689 no-insert)
|
|
|
690 (list delimiters words no-insert display)))))
|
|
|
691
|
|
|
692 ;;;%%Undo
|
|
|
693 (defun completer-insert (match delimiters &optional buffer undo)
|
|
|
694 "Replace the region bounded with characters in DELIMITERS by MATCH
|
|
|
695 and save it so that it can be restored by completer-undo."
|
|
|
696 (let* ((region (completer-region delimiters))
|
|
|
697 (start (car region))
|
|
|
698 (end (cdr region)))
|
|
|
699 (if (and undo (or (not (= start undo))
|
|
|
700 (not (eq (current-buffer) buffer))))
|
|
|
701 (error "No previous pattern")
|
|
|
702 (setq completer-last-pattern (list (buffer-substring start end)
|
|
|
703 delimiters
|
|
|
704 (current-buffer)
|
|
|
705 start))
|
|
|
706 (delete-region start end)
|
|
|
707 (goto-char start)
|
|
|
708 (insert match))))
|
|
|
709
|
|
|
710 ;;;
|
|
|
711 (defun completer-undo ()
|
|
|
712 "Swap the last expansion and the last match pattern."
|
|
|
713 (interactive)
|
|
|
714 (if completer-last-pattern
|
|
|
715 (apply 'completer-insert completer-last-pattern)
|
|
|
716 (error "No previous pattern")))
|
|
|
717
|
|
|
718 ;;;%Minibuffer specific code
|
|
|
719 ;;;%%Utilities
|
|
|
720 (defun completer-minibuf-string ()
|
|
|
721 "Remove dead filename specs from the minibuffer as delimited by //
|
|
|
722 or ~ or $ and return the resulting string."
|
|
|
723 (save-excursion
|
|
|
724 (goto-char (point-max))
|
|
|
725 (if (and (eq minibuffer-completion-table 'read-file-name-internal)
|
|
|
726 (re-search-backward "//\\|/~\\|.\\$" nil t))
|
|
|
727 (delete-region (point-min) (1+ (point))))
|
|
|
728 (buffer-substring (point-min) (point-max))))
|
|
|
729
|
|
|
730 ;;;
|
|
|
731 (defun completer-minibuf-exit ()
|
|
|
732 "Exit and clear pattern."
|
|
|
733 (interactive)
|
|
|
734 (setq completer-last-pattern nil)
|
|
|
735 (exit-minibuffer))
|
|
|
736
|
|
|
737 ;;;
|
|
|
738 (defun completer-new-cmd (cmd)
|
|
|
739 "Return T if we can't execute the old minibuffer version of CMD."
|
|
|
740 (if (or completer-disable
|
|
|
741 (let ((string (completer-minibuf-string)))
|
|
|
742 (or
|
|
|
743 (not (string-match
|
|
|
744 (concat "[" completer-words "/~]")
|
|
|
745 string))
|
|
|
746 (condition-case ()
|
|
|
747 (let ((completion
|
|
|
748 (try-completion string
|
|
|
749 minibuffer-completion-table
|
|
|
750 minibuffer-completion-predicate)))
|
|
|
751 (if (eq minibuffer-completion-table
|
|
|
752 'read-file-name-internal)
|
|
|
753 ;; Directories complete as themselves
|
|
|
754 (and completion
|
|
|
755 (or (not (string= string completion))
|
|
|
756 (file-exists-p completion)))
|
|
|
757 completion))
|
|
|
758 (error nil)))))
|
|
|
759 (progn
|
|
|
760 (funcall cmd)
|
|
|
761 nil)
|
|
|
762 t))
|
|
|
763
|
|
|
764 ;;;
|
|
|
765 (defun completer-minibuf (&optional mode)
|
|
|
766 "Partial completion of minibuffer expressions. Optional MODE is
|
|
|
767 'help for help and 'exit for exit.
|
|
|
768
|
|
|
769 If what has been typed so far matches any possibility normal
|
|
|
770 completion will be done. Otherwise, the string is considered to be a
|
|
|
771 pattern with words delimited by the characters in
|
|
|
772 completer-words. If completer-exact is T, the best match will be
|
|
|
773 the shortest one with the same number of words as the pattern if
|
|
|
774 possible and otherwise the shortest matching expression. If called
|
|
|
775 with a prefix, caching will be temporarily disabled.
|
|
|
776
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|
|
777 Examples:
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|
|
778 a-f auto-fill-mode
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|
|
779 r-e rmail-expunge
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|
780 b--d *begining-of-defun or byte-recompile-directory
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|
781 by d *byte-recompile-directory if completer-any-delimiter is \" \"
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|
782 ~/i.e *~/ilisp.el or ~/il-el.el or ~/ilisp.elc
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|
783 /u/mi/ /usr/misc/"
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|
784 (interactive)
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|
785 (append
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|
786 (let ((completer-use-cache (not (or (not completer-use-cache)
|
|
|
787 current-prefix-arg))))
|
|
|
788 (completer (completer-minibuf-string)
|
|
|
789 minibuffer-completion-table
|
|
|
790 minibuffer-completion-predicate
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|
|
791 completer-words
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|
|
792 completer-any-delimiter
|
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|
793 mode))
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|
|
794 (list "^" completer-words mode)))
|
|
|
795
|
|
|
796 ;;;%%Commands
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|
797 (defun completer-toggle ()
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|
|
798 "Turn partial completion on or off."
|
|
|
799 (interactive)
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|
|
800 (setq completer-disable (not completer-disable))
|
|
|
801 (message (if completer-disable
|
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|
802 "Partial completion OFF"
|
|
|
803 "Partial completion ON")))
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|
|
804
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|
805 ;;;
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|
|
806 (defvar completer-old-help
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|
807 (lookup-key minibuffer-local-must-match-map "?")
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|
808 "Old binding of ? in minibuffer completion map.")
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|
809 (defun completer-help ()
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|
810 "Partial completion minibuffer-completion-help.
|
|
|
811 See completer-minibuf for more information."
|
|
|
812 (interactive)
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|
813 (if (completer-new-cmd completer-old-help)
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|
814 (apply 'completer-goto (completer-minibuf 'help))))
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815
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|
816 ;;;
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|
817 (defvar completer-old-completer
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|
|
818 (lookup-key minibuffer-local-must-match-map "\t")
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|
|
819 "Old binding of TAB in minibuffer completion map.")
|
|
|
820 (defun completer-complete ()
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|
|
821 "Partial completion minibuffer-complete.
|
|
|
822 See completer-minibuf for more information."
|
|
|
823 (interactive)
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|
824 (if (completer-new-cmd completer-old-completer)
|
|
|
825 (apply 'completer-goto (completer-minibuf))))
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|
826
|
|
|
827 ;;;
|
|
|
828 (defvar completer-old-word
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|
829 (lookup-key minibuffer-local-must-match-map " ")
|
|
|
830 "Old binding of SPACE in minibuffer completion map.")
|
|
|
831 (defun completer-word ()
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|
|
832 "Partial completion minibuffer-complete.
|
|
|
833 See completer-minibuf for more information."
|
|
|
834 (interactive)
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|
|
835 (if (eq completer-any-delimiter ?\ )
|
|
|
836 (insert ?\ )
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|
|
837 (if (completer-new-cmd completer-old-word)
|
|
|
838 (apply 'completer-goto (completer-minibuf)))))
|
|
|
839
|
|
|
840 ;;;
|
|
|
841 (defvar completer-old-exit
|
|
|
842 (lookup-key minibuffer-local-must-match-map "\n")
|
|
|
843 "Old binding of RET in minibuffer completion map.")
|
|
|
844 (defun completer-exit ()
|
|
|
845 "Partial completion minibuffer-complete-and-exit.
|
|
|
846 See completer-minibuf for more information."
|
|
|
847 (interactive)
|
|
|
848 (if (completer-new-cmd completer-old-exit)
|
|
|
849 (let* ((completions (completer-minibuf 'exit))
|
|
|
850 (match (car completions))
|
|
|
851 (unique-p (car (cdr (cdr (cdr completions))))))
|
|
|
852 (apply 'completer-goto completions)
|
|
|
853 (if unique-p
|
|
|
854 (completer-minibuf-exit)
|
|
|
855 (if match
|
|
|
856 (progn (completer-insert match "^")
|
|
|
857 (if minibuffer-completion-confirm
|
|
|
858 (completer-message " (Confirm)")
|
|
|
859 (completer-minibuf-exit)))
|
|
|
860 (if (not completer-message) (beep)))))))
|
|
|
861
|
|
|
862 ;;;
|
|
|
863 (defun completer-match-exit ()
|
|
|
864 "Exit the minibuffer with the current best match."
|
|
|
865 (interactive)
|
|
|
866 (let* ((completions (completer-minibuf 'exit))
|
|
|
867 (guess (car completions)))
|
|
|
868 (if (not guess)
|
|
|
869 ;; OK if last filename component doesn't match
|
|
|
870 (setq completions (completer-minibuf 'exit-ok)
|
|
|
871 guess (car completions)))
|
|
|
872 (if guess
|
|
|
873 (progn
|
|
|
874 (goto-char (point-min))
|
|
|
875 (insert guess)
|
|
|
876 (delete-region (point) (point-max))
|
|
|
877 (exit-minibuffer))
|
|
|
878 (apply 'completer-goto completions))))
|
|
|
879
|
|
|
880 ;;;%%Keymaps
|
|
|
881 (define-key minibuffer-local-completion-map "\C-_" 'completer-undo)
|
|
|
882 (define-key minibuffer-local-completion-map "\t" 'completer-complete)
|
|
|
883 (define-key minibuffer-local-completion-map " " 'completer-word)
|
|
|
884 (define-key minibuffer-local-completion-map "?" 'completer-help)
|
|
|
885 (define-key minibuffer-local-completion-map "\n" 'completer-minibuf-exit)
|
|
|
886 (define-key minibuffer-local-completion-map "\r" 'completer-minibuf-exit)
|
|
|
887 (define-key minibuffer-local-completion-map "\M-\n" 'completer-match-exit)
|
|
|
888 (define-key minibuffer-local-completion-map "\M-\r" 'completer-match-exit)
|
|
|
889
|
|
|
890 (define-key minibuffer-local-must-match-map "\C-_" 'completer-undo)
|
|
|
891 (define-key minibuffer-local-must-match-map "\t" 'completer-complete)
|
|
|
892 (define-key minibuffer-local-must-match-map " " 'completer-word)
|
|
|
893 (define-key minibuffer-local-must-match-map "\n" 'completer-exit)
|
|
|
894 (define-key minibuffer-local-must-match-map "\r" 'completer-exit)
|
|
|
895 (define-key minibuffer-local-must-match-map "?" 'completer-help)
|
|
|
896 (define-key minibuffer-local-must-match-map "\M-\n" 'completer-match-exit)
|
|
|
897 (define-key minibuffer-local-must-match-map "\M-\r" 'completer-match-exit)
|
|
|
898
|
|
|
899 ;;;%comint
|
|
|
900 (defun completer-comint-dynamic-list-completions (completions)
|
|
|
901 "List in help buffer sorted COMPLETIONS.
|
|
|
902 Typing SPC flushes the help buffer."
|
|
|
903 (completer-comint-dynamic-complete-1 nil 'help))
|
|
|
904
|
|
|
905 (defun completer-comint-dynamic-complete-filename ()
|
|
|
906 "Dynamically complete the filename at point."
|
|
|
907 (completer-comint-dynamic-complete-1 nil t))
|
|
|
908
|
|
|
909 ;;;
|
|
|
910 (defun completer-comint-dynamic-complete-1 (&optional undo mode)
|
|
|
911 "Complete the previous filename or display possibilities if done
|
|
|
912 twice in a row. If called with a prefix, undo the last completion."
|
|
|
913 (interactive "P")
|
|
|
914 (if undo
|
|
|
915 (completer-undo)
|
|
|
916 ;; added by jwz: don't cache completions in shell buffer!
|
|
|
917 (setq completer-string nil)
|
|
|
918 (let ((conf (current-window-configuration)));; lemacs change
|
|
|
919 (completer-complete-goto
|
|
|
920 "^ \t\n\""
|
|
|
921 completer-words
|
|
|
922 'read-file-name-internal
|
|
|
923 default-directory
|
|
|
924 mode)
|
|
|
925 ;; lemacs change
|
|
|
926 (if (eq mode 'help) (comint-restore-window-config conf))
|
|
|
927 )))
|
|
|
928 ;(fset 'comint-dynamic-complete 'completer-comint-dynamic-complete)
|
|
|
929 (fset 'comint-dynamic-complete-filename
|
|
|
930 'completer-comint-dynamic-complete-filename)
|
|
|
931 (fset 'comint-dynamic-list-completions
|
|
|
932 'completer-comint-dynamic-list-completions)
|
|
|
933
|
|
|
934 ;;; Set the functions again if comint is loaded
|
|
|
935 (setq comint-load-hook
|
|
|
936 (cons (function (lambda ()
|
|
|
937 ;; (fset 'comint-dynamic-complete
|
|
|
938 ;; 'completer-comint-dynamic-complete)
|
|
|
939 (fset 'comint-dynamic-complete-filename
|
|
|
940 'completer-comint-dynamic-complete-filename)
|
|
|
941 (fset 'comint-dynamic-list-completions
|
|
|
942 'completer-comint-dynamic-list-completions)))
|
|
|
943 (if (and (boundp 'comint-load-hook) comint-load-hook)
|
|
|
944 (if (consp comint-load-hook)
|
|
|
945 (if (eq (car comint-load-hook) 'lambda)
|
|
|
946 (list comint-load-hook)
|
|
|
947 comint-load-hook)
|
|
|
948 (list comint-load-hook)))))
|
|
|
949
|
|
|
950 ;;;%lisp-complete-symbol
|
|
|
951 (defun lisp-complete-symbol (&optional mode)
|
|
|
952 "Perform partial completion on Lisp symbol preceding point. That
|
|
|
953 symbol is compared against the symbols that exist and any additional
|
|
|
954 characters determined by what is there are inserted. If the symbol
|
|
|
955 starts just after an open-parenthesis, only symbols with function
|
|
|
956 definitions are considered. Otherwise, all symbols with function
|
|
|
957 definitions, values or properties are considered. If called with a
|
|
|
958 negative prefix, the last completion will be undone."
|
|
|
959 (interactive "P")
|
|
|
960 (if (< (prefix-numeric-value mode) 0)
|
|
|
961 (completer-undo)
|
|
|
962 (let* ((end (save-excursion (skip-chars-forward "^ \t\n)]}\"") (point)))
|
|
|
963 (beg (save-excursion
|
|
|
964 (backward-sexp 1)
|
|
|
965 (while (= (char-syntax (following-char)) ?\')
|
|
|
966 (forward-char 1))
|
|
|
967 (point)))
|
|
|
968 (pattern (buffer-substring beg end))
|
|
|
969 (predicate
|
|
|
970 (if (eq (char-after (1- beg)) ?\()
|
|
|
971 'fboundp
|
|
|
972 (function (lambda (sym)
|
|
|
973 (or (boundp sym) (fboundp sym)
|
|
|
974 (symbol-plist sym))))))
|
|
|
975 (completion (try-completion pattern obarray predicate)))
|
|
|
976 (cond ((eq completion t))
|
|
|
977 ((null completion)
|
|
|
978 (completer-complete-goto
|
|
|
979 "^ \t\n\(\)[]{}'`" completer-words
|
|
|
980 obarray predicate
|
|
|
981 nil
|
|
|
982 (if (not (eq predicate 'fboundp))
|
|
|
983 (function (lambda (choice)
|
|
|
984 (if (fboundp (intern choice))
|
|
|
985 (list choice " <f>")
|
|
|
986 choice))))))
|
|
|
987 ((not (string= pattern completion))
|
|
|
988 (delete-region beg end)
|
|
|
989 (insert completion))
|
|
|
990 (t
|
|
|
991 (message "Making completion list...")
|
|
|
992 (let ((list (all-completions pattern obarray predicate)))
|
|
|
993 (or (eq predicate 'fboundp)
|
|
|
994 (let (new)
|
|
|
995 (while list
|
|
|
996 (setq new (cons (if (fboundp (intern (car list)))
|
|
|
997 (list (car list) " <f>")
|
|
|
998 (car list))
|
|
|
999 new))
|
|
|
1000 (setq list (cdr list)))
|
|
|
1001 (setq list (nreverse new))))
|
|
|
1002 (with-output-to-temp-buffer "*Help*"
|
|
|
1003 (display-completion-list
|
|
|
1004 (sort list (function (lambda (x y)
|
|
|
1005 (string-lessp
|
|
|
1006 (or (car-safe x) x)
|
|
|
1007 (or (car-safe y) y))))))))
|
|
|
1008 (message "Making completion list...%s" "done"))))))
|
|
|
1009
|
|
|
1010 ;;;%Hooks
|
|
|
1011 (provide 'completer)
|
|
|
1012 (run-hooks 'completer-load-hook)
|
|
|
1013
|
